DefinitionsA

Click for each heading

then for the answer

Want an “A”Here’s the place to

start.

Alloy

is a mixture of metals

e.g. bronze is a mixture of

copper and tin.

3

Alloys =4 to know

• Bronze = –Copper and Tin

•Brass = –Copper and Zinc

• Solder =–Lead and Tin

• Steel = –Iron and Carbon

Acid

•has pH less than 7

•turns blue litmus paper RED

•sour taste

Area

= length X widthcm2

L

W

Atom

smallest part of an element that has the properties of the element.

Atomic Number

The number of protons in an atom (of an element)

A.C.

Alternating Current

Electricity that changes direction

50 times a second (50 Hz)

Aerobic Respiration

Using oxygen

to release energy from food

in all cells

Acceleration

= change in velocity

time taken

Units = m/s2

Anther

makes pollen in a flower

(male part)

Antagonistic Muscles

pairs of muscles

that pull a bone

in opposite directions

e.g. biceps and triceps

Asexual Reproduction

Reproduction using just one parent producing identical offspring (young)

e.g. cuttings or runners in plants

Atmospheric Pressure

• The weight of the atmosphere (air) pressing down on earth.

• Gets smaller as you climb higher

• Measured by BAROMETER

• Do I know it??• Alloy• 4 examples of alloys• Acid• Area• Atom• Atomic Number

•A.C.•Aerobic Respiration•Acceleration•Anther•Antagonistic Muscles•Asexual Reproduction•Atmospheric Pressure